Re: [PATCH v2] regulator: core: Use different devices for resource allocation and DT lookup

From: Mark Brown <broonie@kernel.org>
To: Marek Szyprowski <m.szyprowski@samsung.com>
Cc: ChiYuan Huang <u0084500@gmail.com>,
	djrscally@gmail.com, hdegoede@redhat.com, markgross@kernel.org,
	lgirdwood@gmail.com, mcoquelin.stm32@gmail.com,
	alexandre.torgue@foss.st.com, yangyingliang@huawei.com,
	gene_chen@richtek.com, chiaen_wu@richtek.com,
	platform-driver-x86@vger.kernel.org,
	linux-kernel@vger.kernel.org,
	linux-stm32@st-md-mailman.stormreply.com,
	linux-arm-kernel@lists.infradead.org,
	ChiYuan Huang <cy_huang@richtek.com>
Subject: Re: [PATCH v2] regulator: core: Use different devices for resource allocation and DT lookup
Date: Wed, 14 Dec 2022 13:32:18 +0000	[thread overview]
Message-ID: <Y5nQYom7SsbFnir+@sirena.org.uk> (raw)
In-Reply-To: <be56fd97-08b5-8a7a-2630-371c83dcab18@samsung.com>

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On Tue, Dec 13, 2022 at 11:23:01PM +0100, Marek Szyprowski wrote:
> On 13.12.2022 17:32, Mark Brown wrote:

> > Thanks for jumping on this so quickly!  Marek, are these boards (or
> > similar ones) generally available?  They seem great at showing up issues
> > so it'd be good if I could get them into my CI and spot problems earlier
> > (or something like kernelci.org would be about as good)?

> Well, they are quite old, but I've seen some used ones on eBay. Just 
> look for "Samsung Chomebook XE503C12" (Peach-Pit) or XE503C32 (Peach-Pi, 
> very rare).

> Getting it integrated into the CI requires a bit of manual work. You 
> have to solder UART lines to the test points on the motherboard. The 
> board can be fully controlled via so called Embedded Controller, what in 
> practice means that you can turn power on/off by sending commands to the 
> dedicated EC UART. The kernel console UART uses 1.8V, while the EC UART 
> - 3.3V. Let me know if you need more details.

Ah, oh dear - I'm afraid my soldering ability isn't up to that sort of
modification.

> Peach-Pi was used on kernelci.org some time ago, but I have no idea what 
> has happened to it.

I suspect it might've fallen off the end of the ChromeOS support window 
and got pulled, I'll see if I can find out.  Perhaps there's some
modified boards kicking about that didn't get thrown out.

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